I have Ridinghall lvl 1, but I can't figure out how to train pets. I don't know if I need to go to their profile or what.

The level of your Ridinghall determines how many pets you can train at once and the highest level you can train them to through the use of training. At lvl 1 you can train 3 pets at a time, and the maximum lvl you can train them to at that lvl is 10. Each training session lasts 4 hours and your pet receives 1 lvl for it.

To train your pet, go to their profile. Next to their lvl will be a green Train button, and next to that it will show the price in silver it will cost for you to train them.

Also, it costs silver to train your pets, which raises with their level, and lowers with experience.

To be more specific, it costs 8 silver for each XP.